Patent Number: 6,310,008

Title: Cross-linked well treating fluids

Abstract: The present invention provides improved cross-linked well treating fluids and methods for preparing and using the fluids in treating wells such as fracturing subterranean zones therein. The improved cross-linked treating fluids comprise water, a galactomannan gelling agent, a cross-linking agent for cross-linking the galactomannan gelling agent, and a viscosity stabilizing agent selected from the group consisting of formaldehyde, formic acid, or mixtures thereof. The viscosity stabilizing agent alters the properties of the well treating fluids and enables them to retain their viscosity over prolonged periods of time when compared to prior well treating fluids.

Inventors: Rietjens; Marcel (Delft, NL)

Assignee: Halliburton Energy Services, Inc.

International Classification: C09K 8/68 (20060101); C09K 8/88 (20060101); C09K 8/60 (20060101); C09K 003/00 (); E21B 043/26 ()

Expiration Date: 10/30/2018